See also:

Loss of a remote key
If either of the remote keys is lost, the other should be taken with the car to a Volvo retailer. As an anti-theft measure, the code of the lost remote key must be erased from the system. NO ...

Situations where ACC may not function optimally
WARNING The radar sensor has a limited field of vision. In some situations it may detect a vehicle later than expected or not detect other vehicles at all. If ACC is not functioning prop ...

Limitations
In certain situations, the BLIS indicator light(s) may illuminate even when there are no other vehicles in the area monitored by the system. NOTE If the BLIS indicator lights illuminate occasion ...